I think this game is just Sega trying to make a quick buck.
Controls: The controls got kind of akward for the 2D Sonic games. Using the Analog Stick is kind of slippery, so you're probably thinking, "Hey! Use the
D-Pad!" Well, I would, but that's a bit akward too. The only part where the Analog Stick would be useful is during the nearly unknown Sonic Arcade game, Sonic the fighters, and the worst Sonic game of all time, Sonic R. (That remark's going to earn me some hate mail.) 5/10
Difficulty: That sort of depends on which game you are playing, Sonic CD being the best... Sonic game of all time. Sonic Fighters would be the easiest, seeing that you can beat the game by mashing the attack button. The difficulties are spread out, but the difficulty is good, overall. 8.5/10
Story: All of the stories are the same. I'll say it once, I'll say it again, *sigh* You have to defeat Dr. Robotnik, or Eggman from destroying the creatures of the forest. 7/10
Graphics: All of the graphics are really good, except for Sonic R and Sonic the Fighters. There were too little polygons. Sonic CD is in glorious 16-bit, and that's about it. 3/10
Overall, the game is just another pile of Sonic games that don't include any bonus features. (Other than the museum and such.) It's almost like Sega just felt like pick-pocketing us for a few Sonic games that weren't very good. 6.5